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Title: The Challenges of Plasma Material Interactions in Nuclear Fusion Devices and Potential Solutions

Abstract

Plasma Material Interactions in future fusion reactors have been identified as a knowledge gap to be dealt with before any next step device past ITER can be built. The challenges are manifold. They are related to power dissipation so that the heat fluxes to the plasma facing components can be kept at technologically feasible levels; maximization of the lifetime of divertor plasma facing components that allow for steady-state operation in a reactor to reach the neutron fluences required; the tritium inventory (storage) in the plasma facing components, which can lead to potential safety concerns and reduction in the fuel efficiency; and it is related to the technology of the plasma facing components itself, which should demonstrate structural integrity under the high temperatures and neutron fluence. This contribution will give an overview and summary of those challenges together with some discussion of potential solutions. New linear plasma devices are needed to investigate the PMI under fusion reactor conditions and test novel plasma facing components. The Material Plasma Exposure eXperiment MPEX will be introduced and a status of the current R&D towards MPEX will be summarized.

Authors:
ORCiD logo [1]
  1. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1394140
Grant/Contract Number:  
AC05-00OR22725
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Fusion Science and Technology
Additional Journal Information:
Journal Volume: 72; Journal Issue: 3; Conference: Technology of Fusion Energy (TOFE 2016), Philadelphia, PA (United States), 21-25 Aug 2016; Journal ID: ISSN 1536-1055
Publisher:
American Nuclear Society
Country of Publication:
United States
Language:
English
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY

Citation Formats

Rapp, J. The Challenges of Plasma Material Interactions in Nuclear Fusion Devices and Potential Solutions. United States: N. p., 2017. Web. doi:10.1080/15361055.2017.1333859.
Rapp, J. The Challenges of Plasma Material Interactions in Nuclear Fusion Devices and Potential Solutions. United States. doi:10.1080/15361055.2017.1333859.
Rapp, J. Wed . "The Challenges of Plasma Material Interactions in Nuclear Fusion Devices and Potential Solutions". United States. doi:10.1080/15361055.2017.1333859. https://www.osti.gov/servlets/purl/1394140.
@article{osti_1394140,
title = {The Challenges of Plasma Material Interactions in Nuclear Fusion Devices and Potential Solutions},
author = {Rapp, J.},
abstractNote = {Plasma Material Interactions in future fusion reactors have been identified as a knowledge gap to be dealt with before any next step device past ITER can be built. The challenges are manifold. They are related to power dissipation so that the heat fluxes to the plasma facing components can be kept at technologically feasible levels; maximization of the lifetime of divertor plasma facing components that allow for steady-state operation in a reactor to reach the neutron fluences required; the tritium inventory (storage) in the plasma facing components, which can lead to potential safety concerns and reduction in the fuel efficiency; and it is related to the technology of the plasma facing components itself, which should demonstrate structural integrity under the high temperatures and neutron fluence. This contribution will give an overview and summary of those challenges together with some discussion of potential solutions. New linear plasma devices are needed to investigate the PMI under fusion reactor conditions and test novel plasma facing components. The Material Plasma Exposure eXperiment MPEX will be introduced and a status of the current R&D towards MPEX will be summarized.},
doi = {10.1080/15361055.2017.1333859},
journal = {Fusion Science and Technology},
number = 3,
volume = 72,
place = {United States},
year = {Wed Jul 12 00:00:00 EDT 2017},
month = {Wed Jul 12 00:00:00 EDT 2017}
}

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